editors/kate: Adjust PLIST entries to reflect changed Python 3 plugins
in the last release, and to fix a stray Python 2 only entry that wasn't
versioned as such. Bump PKGREVISION. (Should have no impacts on default
builds, though.)

Bump freetype2 and fontconfig dependencies to current pkgsrc versions,
to address issues with NetBSD-6(and earlier)'s fontconfig not being
new enough for pango.
While doing that, also bump freetype2 dependency to current pkgsrc
version.
Suggested by tron in PR 47882

Import kate. part of KDE SC 4.8.0
Kate is a multi-document, multi-view text editor for KDE. It features
stuff like codefolding, syntaxhighlighting, dynamic word wrap, an
embedded console, an extensive plugin interface and some prelimentary
scripting support.